Vietnamese durian has entered the period when it strengthens its presence in world markets. Dak Lak and Lam Dong in the Central Highlands reach their peak in September-October, and in the same period Thailand's summer crop enters its off-season. In the autumn of the Northern Hemisphere, when growing-area supply thins, Vietnam alone keeps up thick shipments, making September-December a supply window in which Vietnamese fruit holds the initiative on both price and volume. For Japanese fruit buyers and importers, it is one of the few windows in which they can shift the center of gravity of procurement toward Vietnamese fruit, and an entry point for drawing up purchasing plans ahead of time.
August produce exports were US$1.1 billion, led by durian
According to tallies by Vietnam's Ministry of Agriculture and Environment, produce exports in August 2026 were about US$1.1 billion, up 14.6% year on year and up 1.3% from the previous month. The January-August cumulative total reached US$5.8 billion, up 21.8% year on year. What pulled this growth was durian, whose eight-month export value of about US$1.77 billion, up 47.1% year on year, single-handedly accounted for about 30% of all produce.
The monthly trend is accelerating too. July durian exports were US$681.2 million, up 81% year on year, and shipments have kept piling up from July on, making clear a structure in which exports concentrate in the four months to year-end. In the industry there is also a view that it will grow further over the full year. Converting at about ¥150 to US$1, the eight-month durian export value comes to the scale of ¥260 billion.
The Central Highlands' Dak Lak and Lam Dong hit their peak in September-October
The center of supply has moved to the Central Highlands. Dak Lak's planted area has spread to about 41,000 hectares, and its 2026 harvest is projected at about 500,000 tonnes. The two provinces, together with Lam Dong, reach their harvest peak from September into October, and the shipment volume in this period greatly sways the annual export value.
Whereas the Mekong Delta's main season concentrates in the first half, the Central Highlands' harvest season slips later because of differences in elevation and climate. Growing areas take turns through the year like a relay, and the Central Highlands fills the early-autumn supply trough. The difference in harvest calendars between growing areas is the groundwork for Vietnamese fruit continuing to ship without interruption from September to December. Dak Lak's peak season and the movement of growing-area codes are worth grasping in reading the volume and quality of this period.
The off-season of Thailand's summer crop opens the September-December window
The biggest factor behind Vietnamese fruit's advantage is that the competitor's supply thins. Thailand's summer durian finishes its summer harvest, and from September on both shipment volume and quality fall. While Thailand, the world's largest exporter, enters its off-season, Vietnam can maintain thick supply with the Central Highlands harvest. With Vietnamese fruit filling the growing-area gap, September-December is when Vietnamese fruit's relative standing in the international market is strongest.
The short transport distance also matters in this period. Being able to deliver to the Chinese market in a short time by land, Vietnamese fruit moves more easily on freshness and price. The supply-side circumstance of the off-season and the logistics condition of transport overlap, creating a flow in which demand gathers around Vietnamese fruit over the autumn months.
90% of exports go to China; price is set by demand in the north
Destinations for Vietnamese durian are heavily skewed toward China, with around 90% of the value accounted for by shipments to China. This single-market concentration strongly ties Vietnamese fruit's price to Chinese demand trends. When Chinese consumption picks up, growing-area prices jump; when demand loosens, there are moments when wholesale prices fall even as volume grows. There have been phases when the local wholesale price halved even though export volume rose 30% from the previous year, and the market-diversification challenge in which volume and unit price move in opposite directions has become a structural theme for Vietnamese durian.
Put the other way, in the September-December window, China's autumn demand and Vietnam's peak season rise at the same time. buying on the Chinese side sets the price benchmark, so the Japanese procurement side can gauge Vietnamese-fruit purchasing terms more easily by first forming a market view from the price movements of the Chinese market.
Frozen and processed goods are Japan's acquisition route; the off-season widens the purchasing margin
What moves in the Japanese market for Vietnamese durian is mainly frozen flesh and ingredients for processing. When growing-area supply thickens in September-December, the portion that cannot all be routed to fresh fruit for China is directed to frozen and processed ingredients, and the volume Japanese importers can secure tends to widen. In this period, when growing-area prices swing with the tussle of demand and supply, room to negotiate the purchase unit price also arises.
The phase when world fresh-fruit supply thins in Thailand's off-season becomes an entry point for considering a switch of processed-ingredient procurement to Vietnamese fruit. Before growing areas shift to the Mekong Delta's main season from the new year on, securing Central Highlands inventory in advance pays off for year-end sales and the next spring's product planning.
Gauge procurement timing by growing-area codes and quality variability
The first thing to confirm in buying Vietnamese fruit is the growing-area codes of export-registered orchards and packing facilities. China requires proof that imported durian is free of auramine O and cadmium residues, and shipments must come from growing areas holding registered codes to ride the official route. For frozen and processed ingredients bound for Japan too, the presence of a code is the first yardstick for judging quality and traceability.
In the peak season, as shipment volume rises all at once, quality differences between orchards also surface. Growing areas that align the timing of fertilizing and harvesting have a high Grade A ratio and stable specs. Conversely, last-minute shipments at the peak tend to mix in variability in ripeness. Whether to prioritize volume at the September-October peak at the expense of quality, or to choose spec-aligned fruit in the later October-December period, requires a judgment that splits the timing according to the aim of procurement.
The skew toward China and wholesale-price swings are the biggest risk
The biggest risk in using this window is the price swing brought by concentration on Chinese demand. When Chinese buying is strong, growing-area prices stay high and the cost of securing ingredients routed to Japan rises. If the Chinese side adjusts inventory or tightens regulations, shipment volume can drop sharply, or conversely fruit with nowhere to go can crash in price. The point that an increase in volume does not necessarily lead to a stable unit price needs to be factored into the purchasing plan.
On the regulatory side too, there remains room for the application of residue standards and quarantine to suddenly tighten. Continuously confirming the registration status of growing-area codes and the inspection system, and keeping multiple growing areas and packing facilities as candidates, is a safeguard for when supply stops.
Build September-December into the purchasing plan
September-December, when the off-season of Thailand's summer crop overlaps with the Central Highlands' peak season, is the few months when Vietnamese durian takes the leading role in world supply. Precisely because the conditions of price, volume, and quality move most in this period, it becomes an entry point for the Japanese procurement side to shift its weight to Vietnamese fruit. If you grasp three points, a market view starting from Chinese demand, quality checks built around growing-area codes, and the split use of peak season and later season, you can turn the autumn supply window into purchasing that looks ahead to the next year's product planning. The judgment to use this window, when the fresh-fruit off-season opens, ahead of time to secure frozen and processed ingredients will sway second-half procurement.
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